.activity {
    display: block !important;
  }
  input[type="text"] {
    border: 2px solid rgba(128, 128, 128, 1);
    border-radius: 2px;
  }
  .job .dle {
    position: absolute !important;
    bottom: 50px;
    right: 20px;
  }
  .checkbox {
    width: 60px;
  }
  textarea {
    padding-left: 10px;
    position: relative;
    bottom: -20px;
    resize: none;
    width: 500px;
    height: 40px;
    margin-left: 20px;
    line-height: 20px;
    border: 2px solid black;
    border-radius: 4px;
  }
  .job {
    position: relative;
    box-sizing: border-box;
    border: 1px solid rgb(128, 128, 128);
    border-radius: 9px;
    height: 100px;
    width: 800px;
    margin: 0 auto;
    margin-top: 50px;
    padding: 10px 20px;
  }
  
  .job_options {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
  }
  .job_options div {
    margin: 15px 66px;
    margin-top: 30px;
    display: flex;
    vertical-align: middle;
  }
  .job > span {
    margin-left: 20px;
  }
  .border {
    box-shadow: 4px 4px 20px rgba(0, 0, 0, 0.5);
    border-radius: 40px;
  }
  .container {
    background-color: #fff;
    width: 980px;
    margin-top: 50px;
  }
  .homework_title {
    /* width: 90%; */
    font-weight: 600;
    /* margin-left: 40px; */
    margin-top: 30px;
    text-align: center;
    border: 0;
    outline: none;
    font-size: 40px;
    border: 0 !important;
    border-bottom: 1px solid black !important;
    /* text-decoration:underline */
  }
  .questions {
    width: 500px;
    border: 1px solid black;
    margin: 50px 0;
  }
  .questions_title {
    width: 500px;
    height: 45px;
    font-size: 30px;
    margin-left: 10px;
    border: 2px solid black;
    border-radius: 2px;
  }
  .question_types div {
    display: inline-block;
    border: 1px solid black;
  }
  .center {
    position: relative;
    left: 50%;
    transform: translateX(-50%);
  }
  
  * {
    margin: 0;
    padding: 0;
  }
  
  ul li {
    list-style: none;
  }
  
  main {
    width: 960px;
    height: 350px;
    border-radius: 10px;
    margin: 50px auto;
  }
  
  main h4 {
    height: 100px;
    line-height: 100px;
    text-align: center;
  }
  /* main{
      position: relative;
      bottom: -60px;
  } */
  
  .option > div > input[type="text"] {
    /* margin-left: 60px; */
    width: 50px;
  }
  
  .option {
    margin-top: 30px;
    display: flex;
    justify-content: space-evenly;
  }
  
  .options {
    margin-top: 30px;
  }
  
  .options input {
    margin-left: 10px;
  }
  
  .tabsbox {
    width: 900px;
    margin: 0 auto;
    height: 200px;
    border: 1px solid rgb(128, 128, 128);
    border-radius: 4px;
    position: relative;
  }
  
  nav ul {
    overflow: hidden;
  }
  
  nav ul li {
    float: left;
    width: 100px;
    height: 50px;
    top: -1px;
    line-height: 50px;
    text-align: center;
    border-right: 1px solid #ccc;
    position: relative;
  }
  
  /* nav ul li */
  .liactive {
    border-bottom: 2px solid #fff;
    z-index: 99;
  }
  
  /* #tab input {
      width: 80%;
      height: 60%;
  } */
  
  nav ul li span:last-child {
    position: absolute;
    user-select: none;
    font-size: 12px;
    top: -18px;
    right: 0;
    display: inline-block;
    height: 20px;
  }
  
  .tabadd {
    position: absolute;
    width: 100px;
    top: 40px;
    right: 20px;
  }
  
  .tabadd button {
    height: 30px;
    line-height: 20px;
  }
  
  .tabscon {
    width: 100%;
    /* height: 300px; */
    position: absolute;
    padding: 30px;
    top: 50px;
    left: 0px;
    box-sizing: border-box;
    border-top: 1px solid #ccc;
  }
  
  .tabscon section,
  .tabscon section.conactive {
    position: relative;
    display: none;
    width: 100%;
    height: 100%;
  }
  
  .tabscon section.conactive {
    display: none;
  }
  .container button {
    position: absolute;
    right: 0px;
    bottom: 0px;
    float: right;
  }
  input[type="checkbox"] {
    position: relative;
    top: 40%;
    left: 0%;
    transform: translate(-50%, -50%);
  }
  .file input[type="file"] {
    position: relative;
    top: 20px;
    left: 30px;
  }
  